dalinaum

플러터 구현은 크게 플러터와 엔진으로 구분.

• https://github.com/flutter/flutter
• https://github.com/flutter/engine

플러터는 인텔리제이로 개발하는 것 같고 (안드로이드 스튜디오로 했더니 잘 안됨), 엔진은 VS Code로 하는 것 같은데 안드로이드 스튜디오와 XCode를 써야 할까?

RestorableValue를 iOS에서 쓸려면 Flutter View Controller를 찾아 Restoration ID를 설정해야 한다고 함.

dalinaum

import java.util.Collections;
import java.util.HashMap;

class Solution {
    public int solution(int a, int b, int c, int d) {
        HashMap<Integer, Integer> map = new HashMap<>();
        map.put(a, map.getOrDefault(a, 0) + 1);
        map.put(b, map.getOrDefault(b, 0) + 1);
        map.put(c, map.getOrDefault(c, 0) + 1);
        map.put(d, map.getOrDefault(d, 0) + 1);

dalinaum

import java.util.ArrayList;

class Solution {
    public int[] solution(int l, int r) {
        ArrayList<Integer> result = new ArrayList();
        
        for (int i = l; i <= r; ++i) {
            String value = String.valueOf(i);
            boolean matched = true;
            for (int j = 0; j < value.length(); ++j) {

dalinaum

class Solution {
    public int[] solution(int[] arr, int[][] queries) {
        int[] answer = new int[queries.length];
        
        for (int i = 0; i < queries.length; i++) {
            final int s = queries[i][0];
            final int e = queries[i][1];
            final int k = queries[i][2];
            
            int minValue = Integer.MAX_VALUE;

dalinaum

print("Hello")

dalinaum

Here I try to implement a simple pipe forward operator similar to |> operator in Elixir or the andThen operator in Scala

Let's say you have a need for doing something like this

val x = f("something")
val y = g(x)
val z = h(y)

This is also equivalent to saying:

dalinaum

import FinanceDataReader as fdr
import os.path
import pandas as pd

data_exists = os.path.exists('data.csv')

if data_exists:
  print("데이터를 이미 받아왔습니다.")
  data = pd.read_csv('data.csv', parse_dates=['Date'], index_col=['Date'])
else:

dalinaum

#홈페이지에서 API서비스 신청시 받은 Appkey, Appsecret 값 설정
APP_KEY: "XXXX"
APP_SECRET: "XXXX"

#계좌번호 앞 8자리
CANO: "70502290"
#계좌번호 뒤 2자리
ACNT_PRDT_CD: "01"

#실전투자

dalinaum

import requests
import json
import datetime
import time
import yaml

with open('config.yaml', encoding='UTF-8') as f:
    _cfg = yaml.load(f, Loader=yaml.FullLoader)
APP_KEY = _cfg['APP_KEY']
APP_SECRET = _cfg['APP_SECRET']

dalinaum

#!/usr/bin/env python

from selenium import webdriver
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait

chrome_path = 'armmac/chromedriver'
driver = webdriver.Chrome(chrome_path)